Grate-bar.



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TTIN OLSON, MINNEAPOLS, MINNESOTA.

SPEFITGN forming pari: of Leiters Patent No. 559,451, dated October 9, 1900.

Anf-limiti@ filed January 19, .i909A Serial lio. 1,984. @lo modei.)

en?? nfl/mm .any 00m/'erw ne ir known iii-af GTTIN OLSON, of Min- .nolia Hennepin eounijf, Minnesota., have ted eer'nin new :and useful improve riears, oi' Wiiieli he following.; peilieamon. i inverni-en rela-tes 'to jratebars designed l use in Furnaces Where sawdust, edglngs7 or slabs are usee for fuel; reef oi Jche invention is io prevent the cracking or breaking of the bars from nnequal expansion or oonsreeion.

A inrtrlier olfjeei. is to provide a grate-bar made up of several parte or pieces which when lnolen een lie easily replaced and loeinn enel; separately een be readilynssembled.

Ti invention ee sif'te geneally in a gratennraliei rene or 'bibs and tre-ns- `nfzoralily arranged thereon, enifion eoi'lsietsin various ne and eonlbinazions, all here.- lrilgnL and pariieniarly :onmanying drawings, forming* .J 4v`eeidennen., Figure i is a pia-n emlodying my invention with me rire-bers removed, Fig. 2 is a side elevation of niie'saine Fig. o is a pariel plan View showing the dre-bars in posiiion. #i and similar views showing modified forms of Alire-leere. Fig. 6 is a transverse eeeiion of the bar, showing the dre-hars in side elevation. Fig. 7 is a perspective of of? bhe iire-bars- Fig. 8 is a sectional ofig. 6. i-lie drawings, 2 represents the longinal parallel Webs or rilos of the grate-bar,

ered ei; Li'ieir ends by heads 3 and pron iieir outer Surfaces with Series of '.l. grooves i, ex'iendingto ine i'opof the nl the Webs i), extending; transmereof, I arrange a series of @rese or e liars. 57 having atilieir ends depending ral lng-e G, liaii extend down over the of said web when the crossereon. 'llie inrerfaeee of forming knife-edges 7, Lne grooves in said web and Y1re-mrs in position iliereon. The

l l l [l l l knife-edges 7 preferably fit. loosely within the grooves 4 in order that'tlie unequal expaneien and oon'raetion of the Webs and iire liars will not oause any cracking or breaking of the same. Furthermore, the Webs and isnrs, beingeast separately, Wili notI as readily lraneniiiV heal; or colli from one to the other. Ar the lower edge of said lire-bars, upon eac-l1' side, E prefer to arrange the lugs 8, having sharp upper edges 9 todeileet the ashes, the ends ol said lugs abnmine` the ends of the livigs on bhe adjacent liars and keeping said bars separated and in their proper position on the webs, while perinining Lheir ready removal. y E

In Fig. 4 have shown a series of bars.:y 9 arranged diagonally upon the wehe, and ill Fig'. S'i' have Shown ll-shaped cross-bars, which, with the bars 9, are supported on the web in a manner corresponding tov the bars above deseribed.

Should one of the frebars become broken,l it may be readily removed and a new one su`oetitnled, and as the parte are oasi; separately no Corine` will be required and the expense of nienufaeinringr the bar greatly reduced.

Various: ways may be devised for seen ring inixe lire-liars in position upon the web by any one skilled in the arf., and I do not therefore Wish to be con lined to the details of const-rnction above described.'

claim as new and desire to secure by Letters Patentv l. In a grate-bar, @he combination, with substantially-nerallei webs o r bars, having slots in their outer feces, of re-barstrransversely arranged thereon, lugs provided on said fire-bers to enter said slots, and lugs provided betiveen said bars and resting upon the tops of said Webs, sulwtaantially an described.

L, l'n e. gratebar, the combination, with the Webs 2 having` the heads 3 and grooves e, of the fire-bers 5 having -lugs Loenter said grooves, lugs 8 provided on said bars and seperating tliesaine and .the knife-edges 9 provided on said lugs 8, for ille vpurpose specified.

3. In a grate-bar, ille' Combination, with paraliel Webs 2 and the heads Sloonnoctl ing,r the same, of Llw fuenfma 5 transversely whe wps 0i' said welm7 substantially as de scribed. I0

h1 wiifnss whweof have hermann@ mi; 'my

hemd @his 10th (my 0i January, MUG. 

